Wireless serial port expansion module
By designing a wireless serial port expansion module, the connection problem of long distance or inconvenient wiring in PLC applications is solved, and the compatibility between wireless interconnection and original serial port communication is achieved, which improves system efficiency and reduces maintenance costs.
Patent Information
- Application Number
- CN202421946215.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-12
AI Technical Summary
In the field of PLC application, in the long distance between the user end and the device end or inconvenient wiring environment, the existing serial port connection method increases cost and maintenance difficulty, and reduces system efficiency.
A wireless serial port expansion module is designed, consisting of device module S and user module U. It connects the user host and PLC through wireless communication, maintains the availability of PLC's original serial port communication, and uses the same type of wireless remote serial port and MCU unit for data management and transmission.
It realizes wireless interconnection between the user host and the PLC, maintains the availability of PLC's original serial port communication, reduces the difficulty and cost of system maintenance, and improves system efficiency.
Smart Images
Figure CN223123452U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wireless communication, and particularly relates to a wireless serial port expansion module. Background Art
[0002] Now we have truly entered an era where wireless technology is everywhere. Wireless technology is constantly changing our way of life, making people's lives more comfortable, beautiful, and safe. The applications of typical systems such as industrial control systems and agricultural and garden monitoring systems have demonstrated the continuous expansion and development of wireless technology.
[0003] Currently, in the field of PLC applications, the device side and the user side still use a serial cable to connect to each other and complete data transmission. In actual use, when the distance between the user side and the device side is relatively long or in some environments where wiring is not convenient, such as when additional devices need to be connected or debugging is required, this situation increases costs, increases the maintenance difficulty of the system, and reduces efficiency.
[0004] Therefore, the applicant hereby proposes a wireless serial port expansion module. Summary of the Utility Model
[0005] To solve the deficiencies of the prior art, the utility model provides a wireless serial port expansion module.
[0006] The technical solution of the utility model is as follows:
[0007] The utility model provides a wireless serial port expansion module, which is composed of a device module S and a user module U. The user module U is used to connect to a user host and enable it to establish a wireless communication connection with a PLC. The device module S is used to connect to the PLC and perform wireless communication expansion on it, while keeping the original serial port communication of the PLC side available;
[0008] The device module S includes a serial port H for wired connection to an HMI or other devices, a first wireless remote serial port for wireless transmission communication with the user module U, a serial port M1 for connecting to the PLC, and a first MCU unit for completing the communication parameter adaptation of the PLC, managing the first wireless remote serial port and the serial port H, and controlling the orderly communication of the data of these two serial ports with the serial port M1;
[0009] The user module U includes a serial port M2 for connecting to the user host, a second wireless remote serial port for wireless transmission communication with the device module S, and a second MCU unit for directly transmitting the serial port communication data of the user host outward through wireless transparent transmission.
[0010] Further, the user host is a display device that supports serial port communication.
[0011] Further, the first wireless remote serial port and the second wireless remote serial port are wireless transmission modules of the same type.
[0012] Further, the serial ports M1, M2, and H all support serial communication protocols such as RS485, RS232, RS422, and TTL.
[0013] Further, protective casings are provided on the outer sides of the device module S and the user module U.
[0014] The beneficial effects achieved by the present utility model are as follows:
[0015] The device module S and the user module U of the present utility model cooperate with each other, enabling wireless interconnection between the user host and the PLC while ensuring the availability of the original serial communication of the PLC, and the wireless remote serial port and the original serial port of the PLC do not interfere with each other. Description of the Drawings
[0016] Figure 1 is a schematic structural diagram of the device module S of the present utility model.
[0017] Figure 2 is a schematic structural diagram of the user module U of the present utility model. Detailed Embodiment
[0018] To facilitate the understanding of the present utility model by those skilled in the art, the following describes the detailed embodiment of the present utility model with reference to the drawings.
[0019] As Figure 1-2 shown, a wireless serial port expansion module of the present utility model is composed of a device module S and a user module U. The user module U is used to connect to the user host and enable wireless communication connection with the PLC. The device module S is used to connect to the PLC and expand its wireless communication while keeping the original serial communication at the PLC end available.
[0020] The device module S includes a serial port H for wired connection with an HMI or other devices, a first wireless remote serial port for wireless transmission communication with the user module U, a serial port M1 for connecting to the PLC, and a first MCU unit for completing the communication parameter adaptation of the PLC, managing the first wireless remote serial port and the serial port H, and controlling the orderly communication of the data of these two serial ports with the serial port M1. The first wireless remote serial port, the serial port M1, and the serial port H are all electrically connected to the first MCU unit respectively.
[0021] The user module U includes a serial port M2 for connecting to the user host, a second wireless remote serial port for wireless transmission communication with the device module S, and a second MCU unit for directly transmitting the serial communication data of the user host outward through wireless transparent transmission; the serial port M2 and the second wireless remote serial port are both electrically connected to the second MCU unit respectively.
[0022] The user host is a display device supporting serial communication, including but not limited to industrial mobile phones, industrial tablet computers, industrial computers, etc.
[0023] The first wireless remote serial port and the second wireless remote serial port are of the same type of wireless transmission module, including but not limited to WIFI module, Bluetooth module, Zigbee module, LoRa module, radio frequency transceiver module, etc. In this embodiment, the WiFi module is preferably used.
[0024] The serial ports M1, M2, and H all support serial communication protocols such as RS485, RS232, RS422, and TTL.
[0025] Protective cases are provided on the outsides of the device module S and the user module U;
[0026] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.
Claims
1. A wireless serial port expansion module, characterized in that: It is composed of a device module (S) and a user module (U). The user module (U) is used to connect to a user host and enable it to establish a wireless communication connection with the PLC. The device module (S) is used to connect to the PLC and perform wireless communication expansion on it, while keeping the original serial communication available at the PLC end; The device module (S) includes a serial port H for wired connection to the HMI device, a first wireless remote serial port for wireless transmission communication with the user module (U), a serial port M1 for connecting to the PLC, and a first MCU unit for completing the communication parameter adaptation of the PLC, managing the first wireless remote serial port and the serial port H, and controlling the orderly communication of the data of these two serial ports with the serial port M1; The user module (U) includes a serial port M2 for connecting to the user host, a second wireless remote serial port for wireless transmission communication with the device module (S), and a second MCU unit for directly transmitting the serial communication data of the user host outward through wireless transparent transmission.
2. The wireless serial port expansion module according to claim 1, characterized in that: The user host is a display device that supports serial communication.
3. The wireless serial port expansion module according to claim 2, wherein: The first wireless remote serial port and the second wireless remote serial port are of the same type of wireless transmission module.
4. The wireless serial port expansion module according to claim 3, characterized in that: The serial ports M1, M2, and H all support serial communication protocols such as RS485, RS232, RS422, and TTL.
5. The wireless serial port expansion module according to claim 4, characterized in that: Protective cases are provided on the outer sides of both the device module (S) and the user module (U).